Tool-holder



H. E.V BRITTON. TOOL HOLDER.

Patented Mar. 13, 1894.

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TOOL-HOLDER.

SPECIFICATION forming part of Letters Patent N o. 516,294, dated March 13, 1894.

Application filed November 24,1893. Serial No. 491,914. (No model.)

To all whom it may concern:

Be it known that I, HORACE E. BRITTON, a citizen ofthe United States, residing at Stoughton, in the county of Norfolk and State of Massachusetts, have invented certain Improvements in Tool-Holders, of which the following is a full, clear, andexact description, reference being had to the accompanying drawings, making part of this specification, in which-` Figure 1 is a side elevation of a tool-holder constructed in accordance with my invention. Fig. 2 is a longitudinal section through the center of the same. Fig. 3 is a view of the tool-holder with the cap removed showing the supernumerary tools in place around the central tool-holding socket-piece. Fig. 4t is a longitudinal section of the solid or rear portion of the handle with the supernumerary tools removed therefrom.

My invention relates to that class of toolholders having a metallic socket-piece projecting axially from the solid or rear portion of the handle, and adapted to receive the shank of the tool which is clamped in place between the holding-jaws of said socket-piece over which is fitted a hollow conical cap or nut forming a portion of the handle, the solid or rear portion of said handle being provided with a series of holes arranged circumferentially around it to receive the Shanks of a set of supernumerary tools which extend up into the chamber formed between the hollow cap and the tool-holding socket-piece. erto constructed, the inner end of this hollow cap has been made to fit over upon the outside of the end of the solid or rear portion of the handle and slide freely thereon when turned to clamp or release the tool, and consequently when said cap was screwed down into place, a short chamber only was afforded which limited the distance that the supernumerary tools could project beyond the holes inthe handle, it being undesirable to increase the length of the hollow cap as this would render the handle too large and detract from its neat and compact appearance. This short chamber wit-hin the cap is however objectionable, inasmuch as the blades or available portions of certain kinds of tools must necessarily be made quite short, and consequently soon become worn away by fre- As hith-A quent grinding, when they must be discarded as of no further use. To overcome this objection and increase the capacity of the tool ferentially around it for the reception of the shanks of the tools, combined with a hollow cap, the inner end of which is adapted to enter and slide within said recess, whereby its edge is concealed and a neater appearance presented, while the length of the chamber within the cap is increased, as the entire length of said chamber is available for use and is not diminished by setting the cap down into place as is the case When its inner end fits over and slidesupon the outside of the solid or rear portion of the handle as first described.

In the said drawings, A, B, represent the two portions of the handle, the solid or rear part A being preferably composed of Wood and having the shank of a tool-holding socket piece D, which may be of any suitable or approved constructiomdriven axially therein as shown in Fig. 2 in such manner that it will be held firmly inplace, said socket-piece being provided withl suitable ears or lugs b made integral therewith and projecting out into the wood to prevent the socket-piece from rotating independently of the handle. The part B consists of a tubular shell or cap preferably composed of metal, its outer portion being of conical or bell shape and preferably provided at its extreme end with an internal screw thread forming anut which is adapted to lit a corresponding thread on the outer conical end of the socket-piece D,where by the jaws c of the latter maybe clamped tightly over the shank d of the toolE inserted between the same. I do not however limit myself to the employment of a tool-holding socket-piece constructed as described, or to clamping the tool therein by means of a screw thread on the inside of the outer end of the hollow cap, as other devices may be employed for clamping the tool in place within the end of the socket-piece without departing from the spirit of my invention. The axial passage e formed between the jaws c is preferably provided with a pin f driven into a hole bored in the solid portion of the socket-piece; said pin f, which is of slightly less diameter than that of the axial passage e, extending up some distance above the bottom of the slits 10, as shown in Fig. 2, and forming a solid rest or support for the base of the shank of the tool, said rest being at the proper distance from the outer ends of the jaws to accommodate a tool-shank of ordinary length.

Within the front end of the solid or rear part A of the handle is formed an annular recess g of any suitable depth, leaving a hub 7L around the socket-piece D as shown in Figs. 2 and 4 which hub is encircled byametal ferrule il driven tightly thereover,whereby the splitting of the wood is prevented and the socket-piece held more firmly in place. At the bottom of this recess g are formed a series of holes 7c arranged circumferentially around the same to receive the shanks of a set of supernumerary tools Z which extend up into the chamber m formed between the hollow cap B and the socket-piece D as shown in Fig. 2. The diameter of the cylindrical portion n of the cap B is such that its inner end will tit snugly within the circular recess g when turned down on the conical threaded end of the socket-piece to clamp the tool E in place between the jaws, the inner edge of the cap being thus concealed from view and a much neater and more finished appearance thereby presented than where the cap is constructed to iit over and slide upon the outside of the end of the part A as has hitherto been the case. By thus forming a recess in the front end of the part A for the reception of the inner end of the hollow cap B as described,l am enabled to materially increase the length of the chamber m without in the least increasing the length of the cap B or the part A, as the entire length of the interior of the cap from its inner end l5 to the shoulder 20 can be utilized to hold the blades of the tools, whereas with the old construction the length of this chamber within the cap was reduced to the extent that the cap slid over the outside of the front end of the part A, consequently with my improved construction the length of the blades of certain tools can be increased so that they will last for a greater length of time under the wear due to frequent sharpening, and in this manner the capacity of a tool-holder of a given size can be largely increased so that it will take a set of tools with larger and longer blades without increasing the length of the handle or its cap or making them clumsy in appearance, a desideratum hitherto unattained in tool holders of this description; furthermore with my improved construction certain kinds of tools such as saw-blades, iiat reamers, dac., can be included among the other tools, which if made with short blades to fit within the shorter chamber of a tool holder of the old construction, would be of no practical value.

The annular recess g, is of much greater width than the thickness of the walls of the cylindrical portion n of the cap, and the circle described by the series of holes 7o lies within that of the interior of the said portion fn, of the cap, so that ample room is aiorded within said recess g, for the lower portions of the tool blades, as is clearly shown in Fig. 2.

What I'claim as my invention, and desire to secure by Letters Patent, is-

1. A tool holder consisting in a handle provided with a tool holding socket at its front end, and an annular recess in said front end concentric with said socket and provided in its base with a circular series of tool shank apertures, and a hollow removable cap fitting over said socket and having a cylindrical body sliding at its inner end into said recess beyond or exterior to the said series of apertures; the walls of said cap being of less thickness than the width of said annular recess to allow the lower portions of the tool blades to enter said recess and thus permit the use of blades as much longer for a given length of cap and handle as the depth of the said recess, substantially as herein described.

2. A handle A, having a longitudinally extending tool-holding socket D at its front end and provided in said front end with an anuular recess g, concentric with said holder, of a width to receive the lower portions of tool blades and provided in its base with a circular series of tool shank apertures, and the cap B having a threaded aperture or nut to receive and operate the tool socket and provided with a hollow cylindrical body portion fn, forming in connection with recess g, a tool holding chamber; the said recess receiving the lower end of the said cylindrical body beyond or exterior to the said apertures and of a greater width than the thickness of the walls of said cylindrical portion, substantially as herein described.

fitness my hand this 20th day of November, A. D. 1893.

HORACE E. BRITTON.

In presence of- P. E. TESCHEMAOHER, HARRY W. AIKEN.

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